Mustafi caught the forward who fell to the ground but Rodriguez was too honest. The rebound by Jake Livermore was sent wide. We haven't had a penalty at this football club for over a year.

With 25 minutes to play a clumsy Nyom challenge on Ramsey meant the home side were awarded a penalty by Madley - Lacazette dispatching the spot kick past the despairing Foster to seal the points with his second goal of the match.

It was a disappointing way for West Brom midfielder Gareth Barry to celebrate making a record 633rd Premier League appearance.

A player that is never in the headlines for the wrong reasons, he is the ultimate professional.

His contract may be up next summer and his future uncertain, but if Sanchez can affect games like he did this one regularly over the course of the campaign then he will prove invaluable to Arsenal...yet again.

His goal at the Emirates was a typical poachers finish.

The France global opened the scoring in the 20th minute, nodding the ball home after Ben Foster had pushed Alexis Sanchez's free-kick onto the crossbar.

The news seems to go from bad to worse for Arsenal fans. "It's hard to play against them".

ALEXANDRE LACAZETTE scored for the third home match running for Arsenal after a tale of two penalty appeals in north London last night.

West Brom had lost on their last six visits to Emirates Satdium but nearly punished a sloppy start from the hosts in the eighth minute.

Tony Pulis is a manager who tends to stick with the tried and tested, but the West Brom boss switched to a 3-5- 2 formation on Monday.

He will consider himself unlucky not to grab a point on Monday with his side denied a blatant penalty early on.